Work Добавлено больше информации в сообщение об ошибке.

AsbCloudInfrastructure/Background/Work.cs

@@ -1,5 +1,6 @@
 using AsbCloudApp.Data;
 using System;
+using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -74,7 +75,8 @@ public abstract class Work : BackgroundWorkDto
         }
         catch (Exception exception)
         {
-            SetLastError(exception.Message);
+            var message = FormatExceptionMessage(exception);
+            SetLastError(message);
             if (OnErrorAsync is not null)
             {
                 var task = Task.Run(
@@ -86,6 +88,31 @@ public abstract class Work : BackgroundWorkDto
         return false;
     }
 
+    private static string FormatExceptionMessage(Exception exception)
+    {
+        var firstException = FirstException(exception);
+        var message = new StringBuilder();
+        if (firstException != exception) 
+        {
+            message.Append("top exception:");
+            message.AppendLine(exception.Message);
+
+            message.Append("inner exception:");
+            message.AppendLine(firstException.Message);
+        }
+        else
+            message.AppendLine(firstException.Message);
+        message.AppendLine(exception.StackTrace);
+        return message.ToString();
+    }
+
+    private static Exception FirstException(Exception exception)
+    {
+        if (exception.InnerException is not null)
+            return FirstException(exception.InnerException);
+        return exception;
+    }
+
     /// <summary>
     /// делегат фоновой работы
     /// </summary>